NHS
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North Korea behind WannaCry cyber-attack that crippled NHS
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Minister blames North Korea for NHS cyber attack
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WannaCry ransomware attack on NHS was easily preventable
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NHS could have prevented WannaCry attack
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NHS could have “fended off cyber-attack if took simple steps”
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WannaCry ransomware: Hospitals were warned to patch system to protect against cyber-attack – but didn't – ZDNet